Police secure an area around Parliament Hill in Ottawa on Oct.22. THE CANADIAN PRESS/Adrian Wyld.

An Ottawa police office draws her weapon in Ottawa on Oct.22. THE CANADIAN PRESS/Sean Kilpatrick.

Paramedics and police pull a victim away from the Canadian War Memorial in Ottawa on Oct. 22. A soldier standing guard at the National War Memorial was shot by an unknown gunman and people reported hearing gunfire inside the halls of Parliament. Prime Minister Stephen Harper was rushed away from Parliament Hill to an undisclosed location, according to officials. AP Photo/The Canadian Press, Adrian Wyld

An Ottawa police officer runs with his weapon drawn in Ottawa on Oct. 22. THE CANADIAN PRESS/Sean Kilpatrick.